Off the top of my head:
- Indexing and replicating content intelligently (how can I find pubkey x's notes?)
- Anarchic protocol design
- Content analysis, clustering, and recommendations
- Developing a programming style that is tolerant of every kind of malformed data (vs having everything validated before working with it. nostr:nprofile1qyghwumn8ghj7mn0wd68ytnhd9hx2tcprfmhxue69uhkummnw3ezuargv4ekzmt9vdshgtnfduhszrnhwden5te0dehhxtnvdakz7qg6waehxw309ac8junpd45kgtnxd9shg6npvchxxmmd9uq3jamnwvaz7tmjv4kxz7fwd4hk6mmnw3ezuurfde4j7qgjwaehxw309ahx7um5wf6k2tnrdakj7qg4waehxw309aex2mrp0yhxgctdw4eju6t09uqzqfngzhsvjggdlgeycm96x4emzjlwf8dyyzdfg4hefp89zpkdgz99dfmusv and I talked about this on TGFN recently)
- Ethics of software development